Governor



W. K. ANDREW.

GOVERNOR.

APPLICATION FILED 00T. 27, 1920.

ATToRNEx/w.

W. K; ANDREW.

Patented Jan. 31, 1922.

2 SHEETS-SHEET 2.

INV EN TOR.

UNITED sra'rss PATENT OFFICE WILLIAM K. ANDREW, or iviiLWAUKEE, Wisconsin.

eovnmvon.

Application filed October 27, 1920. 'Sera1ANo.'420,045.

To all whom itmay concer-n:

Be it known that I, l/ViLLiAM K. ANDREW, a citizen of the United States, residing at Milwaukee, county of Milwaukee, and Stat-e of lVisconsin, have invented new and useful Improvements in Governors, of which fthe following is a specification.'

This invention relatesv to governors and particularly adapted to a combined governor and timer.

Qbjects of this invention are to provide a governor in which friction is greatly re'- duced; in which the spring pressure againstwhich the centrifugal means operate is not transmitted to the bearings; in whichthe centrifugalV force and spring pressureare balanced against'each other within a uni-- tary structure which revolves as a whole;

and in which the movable or adjusting niem-v ber transmits only such force as is required to operate the controlling mechanism.

Other objects are to provide al governoi` and timer which are self-contained; which occupy a small amount of space; which may be readily manufactured; and whichare efficient in operation.

In general, this invention has all of objects of my co-pending application, Serial No. 373258, sied April 12,1920, for gever nors and is an improvementthereover.

In the drawings: Fig. 1 is aV longitudinal sectional view through the combined governor and timer.

Fig. 2 is a corresponding View taken at right angles to the plane' on which Fig. 1 was taken.

Fig. 3 is a section. onthe line of Fig. 1.

Fie'. Fig. i. Y 4

The deviceV comprises a casing 1 which is arranged to have its brackets 2 bolted to any suitable part of the machine. Thel casing 1 has an outwardly extending cylindrical pro"- jection 3 in which theV governor shaft 5"is adapted to rotate, such shaft being supported adjacent its outer 'end iby ballfbear# ings 6.- If desired the space 4f may bev provide'dwith a bushing,A in any obvious manner,

4 is a sectionion the linea-f1 of 'in which the shaft 5 is Vadaptedjto rotate. Vbevel gear 7 iscarried bythe 'outer'end of the shaft 5, and meshes with a bevel gear 8 from whichV the governor receives rotary vmotion from the engine.'V Theshaft 5 ex- Specification o'f'Letters Eatcnt, lgjgnfedetjan. 313.1922. Y

an arm 10. This'a'rm 10 carries a roller 11 arranged to travel around an insulating ring 12vand to be pressed against the inner periphery of such ring. 4'At suitable intervals, contact members 13' are formed in this duced diameter vand'isadapted to'be secured n to the lower'casing 1. It is provided with an inwardly proj ecting' annularV kportioi'iv 16 in whichball-bearings 17 are mounted-to properly guide the upper end of the shaft It is to be noted that the stationary portion of the ball-bearings restsupon an annular `l shoulder 18 formed in themember 16 and thereby serves lto support the shaft, the rotary portion ofthe ball-'bearings contacting with a nut 19 threaded .upontlie shaft'.-

This nut 19 is also pinned to the shaft by means ofV a` pin 2O which passes "through `a corresponding notch 5in the nut 19.V il

`Above this nut 19 is positioned asecond .l

nut 21 which'is threaded upon the shaft 5v and it is arranged vtoi be lrotatedzwith reference to nut 19 and toprop'erl'y position the timer by meansof projecting lugs 22 formed upon the nut 21 and extending intov correspending sockets in theihub 23 of the timer arm. After the proper adjustment has been secured, aset screw'211 threaded in the nut 21 Vis screwed `downwardly against the nut Y A 19 and locks the nut21 andV correspondingly the timer arm in adjusted position." It is toy be noted that the timer comprises a'relatively stationary member including the insulating ring 12`aiid the contacts 413 and an adjustablemeniber 2 1 adapted to be adj usted'an'g'ui larly relativelytojthe shaft 5 and locked in position by'means of aset screw2a and movable rotating contacting member 10,'11,

cooperating lugsgand sockets 22 in adjusted angular vrelation tothe shaftx. By this means a Yworn timer' roller may be quickly removed, and a newtimer roller substituted Vand-2 3 removabv y carried by means of the therefor withoutch'anging the adjustment. j

In actual practice this removal'and replacement occupies less thanone minute, whereas in the former practice it has been usual to spend a half hour or more to replace a worn timer part."

'The weights or centrifagniy actuated members 25, 25 are positioned upon opposite sides of the shaft 5 and are pivotally mounted at 26 in the revolving frame 27 pinned at 28 to the shaft 5. These members 25 are shaped as though they were small sections of a cylinder so that they may occupy a small amount of space and may surround other mechanism located in between them. The lower portion of each of these weights is formed with an integral bell crank arm 29 which may be conveniently arranged at an angle to the pivot 26 (see Fig. 4), and are provided with enlargements 30 at their outer ends which are positionedbeneath a collar 31 secured upon a sleeve 32 loosely mounted upon the shaft lhen the weights move outwardly under the action of centrifugal force, the collar`31 and correspondingly the sleeve 32 are moved upwardly.V Y n The resilient means for resisting the centrifugal action comprises a spring 33 Ywhich surrounds, and is spaced from, the shaft 5., The spring 33 bears at its lower end upon the collar 31 and at its upper end upon the to) 34 of an inverted cu 3-sha Jed rino' 35 l l l e extending rectangular plate 37, the central portion of which is provided with an orifice through which the body of the cup-shaped member 35 projects, and the outer portion of which is provided with a pair of ears 37.

' A second correspondingly shaped rectangular plate 38 is provided above the plate 37 and has downwardly extending arms 39 which are secured toV therevolving frame 27 and supported thereby and form guides for lthe ears 37 which extend uponopposite sides' thereof. Between the plates 37 and 38 and c in contact with the plate 38 is mounted a vided with a'plurality of grooves 41. Rollers 42 are positioned between the plate 37 and themember 40 and are adapted to'seat in and be retained by the grooves 41. Thus when the rollers 42* are moved outwardly, ,the plate 37 is spaced a greater distance from the member 40 and correspondingly from .the plate 38. As such plate 38 is carried by 'the revolving frame 27 and is stationary relatively to the collar 31, the spring 33 is compressed as the plate 37 is forced away from the plate 38. Also as the rollers 42 seat and are retained in the grooves 41, the force fromk the spring is not transmitted outwardly kfrom this unitary structure comprisingthe plates 37, 38 and frame 27, but is internally borne. Y

y Means for forcing the rollers 42 apart comprise a pair of arms 43 in whose outerV Aends the rollers 42are journalled, pivotally mounted at 44 upon a collar 45 s-lidably mounted upon the shaft 5. This collar 45 has a groove 46 formed above the pivot point 44. Into this groove, a pair of rollers 47 extend, such rollers being carried by Va fork lever 48 rigidly fastened upon a rock shaft 49. Therock shaft 49 extends4v outwardly from the casing and is provided with an adjusting lever 50 having' a handle 51 (see Fig. 2). This lever may be provided with means forengaging a series of notches 52 formed in a stationary portion 53 ofthe casing l and may also have a speed indicating dial associated therewith to indicate the speed corresponding to any particular setting of the lever 50. YVhen the leverA 5() is moved, the shaft 49 is rotated and.l through the medium ofthe forked arm 48, rollers 47, and sliding collar 45', serves to alter the position of the pivot point Valongthe shaft 5. As the pivot point 44 movesv towards one end of the shaft, the `rollt-nfs 42 are either forced apart or drawn towards each other, thereby altering the distance between. the plates 37 and 38 and correspond ingly altering the tension of the spring 33. After the rollers 42 have ysnapped into the grooves at which they are located,the.effect of the spring 33 is not transmitted outwardly to other portions of the mechanism.

The slidable sleeve 32 has threaded to its upper portiona collar 53 provided with a groove 54. A forked arm 55 rigidl)7 mounted upon a shaft 56 carries a pairfof rollers 57 at its free end which project into the groove 54 and serve to rock the arm and correspondingly the shaftV 56 as the sleeve 32 moves upwardly :or downwardly ion under the influence of the centrifugal mem-' i bers 25. The shaft 56 extends through the casing rand its outer end has rigidly mounted thereon a lever 58 which is connected by suitable link mechanism with valve of the engine. n Y

If it is desired, the entire mechanism' may run in oil as the casing is oil-tight.Y vA suitable filling valve 59'being providedadj'aceut the control Vone end thereof. It will `thus be seen' that n.

combined timer andr governor'has been pro duced which is simple in construction, easily manufactured, and compact. l

'Also it will be noted ythat the internal stressesoccasioned by thev centrifugal force and the force of thel Spring are borne in a y Y unitary structure `and lare not transmitted to any of the bearings or sliding contacts.

Y I claim: Y

1; A centrifugal governor comprising al shaft, centrifugal means mounted upon said shaft, a frame carriedv by said shaft' and ar` rranged to rotate therewith, a 'sleeve mounted upon said shaft,'means connecting said sleeve andY centrifugally actuated means to slide said sleeve upon said shaft, a pair of members, one of which is rigidlyl connected with said frame, and the other slidablyV mounted in relation thereto, and a spring tending to force said sleeve in one direction and to force said pair of members together and means free to rotate with said frame for spacing and locking said pair of members apart to alter the tension of ysaid spring.

2. A centrifugal governor comprising a shaft, centrifugal means mounted upon said shaft, a frame carried by said shaft for rotation therewith, a sleeve mounted upon said shaft, means connecting said sleeve and cen-w pair of members apart to alter the stress of said spring, said means so arranged that it will lock in any one of a plurality of positions of adjustment, without producing external stresses.

3. A centrifugal governor comprising a shaft, a frame rigidly mounted thereon, centrifugal means pivotally carried by said frame, a sleeve mounted upon said 'shaft and arranged to slide thereon under the in-' fluence of said centrifugal means, a spring acting in opposition to said centrifugal means, one end of said spring being operatively connected with said 'sleeve and the other end carried in an adjustably mounted tending to urge said sleeve` the operation of said centrifugallyv actu-- Y of Vsaid member, means rotating with and operatively bearing against said frame and adapted to alter the pressure of said spring,

whereby centrifugalJ forces and spring1 stresses are wholly internally borne by said frame.

4:. A governor comprising a main shaft, l

centrifugally mounted mechanism upon said shaft adapted to be driven thereby, a frame rigidly 'fastened to said shaft and having a pair of longitudinally extending arms upon which said centrifugally actuated mechanism is pivoted, a sleeve slidably mounted upon said shaft and actuated by said centrifug'ally actuated mechanism, a v'spring in opposition to ated mechanism, a wedge-shaped member rigidly associated with said arm, a'plate operatively connected with said springs and adapted to move with reference tok said i shaft, means positioned between said wedge-v ,shaped member and said plate for varying the tension of said spring, said last mentioned means cooperating with said wedgeany position of adjustment, whereby stresses borne by saidy frame.

In testimonyV whereof I aiiX my signature in the presence of two witnesses.

` WILLIAM K. ANDREW. Witnesses: f

LEVERETT C. WHEELER, OTTIMA S. WEBER.

v spring and .of said centrifugally actuated mechanism are wholly internally 'shaped member yto secure positive locking in 

